DEBT - Summary of Mortgage Warehouse Borrowings (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Line of Credit Facility [Line Items]
Amount Drawn		$ 179,555	$ 413,887
Secured Debt
Line of Credit Facility [Line Items]
Amount Drawn		179,555	413,887
Facility Amount		410,000	760,000
Mortgage borrowings outstanding, collateralized amount		203,200	467,500
Collateralized amount of restricted short-term investments		900	3,500
Warehouse A | Secured Debt
Line of Credit Facility [Line Items]
Amount Drawn		4,538	12
Facility Amount		$ 10,000	10,000
Warehouse A | Secured Debt | LIBOR
Line of Credit Facility [Line Items]
Interest Rate	1.75%	1.75%
Warehouse B | Secured Debt
Line of Credit Facility [Line Items]
Amount Drawn		$ 20,143	86,409
Facility Amount		$ 75,000	150,000
Warehouse B | Secured Debt | LIBOR
Line of Credit Facility [Line Items]
Interest Rate	1.75%	1.75%
Warehouse C | Secured Debt
Line of Credit Facility [Line Items]
Amount Drawn		$ 43,170	116,601
Facility Amount		$ 125,000	250,000
Warehouse C | Secured Debt | LIBOR
Line of Credit Facility [Line Items]
Interest Rate	2.05%	1.95%
Warehouse D | Secured Debt
Line of Credit Facility [Line Items]
Amount Drawn		$ 52,733	105,065
Facility Amount		$ 100,000	150,000
Warehouse D | Secured Debt | LIBOR
Line of Credit Facility [Line Items]
Interest Rate	1.65%	1.65%
Warehouse E | Secured Debt
Line of Credit Facility [Line Items]
Amount Drawn		$ 58,971	105,800
Facility Amount		$ 100,000	$ 200,000
Warehouse E | Secured Debt | LIBOR
Line of Credit Facility [Line Items]
Interest Rate	1.50%	1.50%